Charles



@uiten gi-.tss etant @ffice Letters Patent No. 8 ,917, dated August 11, 1868.

IMPROVEMENT IN GOOPERS ORQZE.

@igt tlgemrle feierten in im time teiter irtnit mit making glatt nf tige time.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, CHARLES O. COOK, of Rockford, \in the county of Winnebago, and State of Illinois, have invented a new and improved Coopers Croze; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of refer ence marked thereon. y l

This invention relates to certain improvements in eoopers croze, and consists in a simple construction of the cutting-iron, whereby it is readily attached to and detached from thc-adjusting-screw when desired, and yet is securely held when in use, as will he described hereinafter.

Figure 1 represents a plan view of my invention, and Figures 2, 3, and 4 represent views of parts detached.

In the drawings- A represents the main part of the instrument, the outer edge of which is curved,.to iit the inside of a barrel, and is V-shaped, as shown. l

i a represents a socket or groove running diagonally across it, in which tits the upper part of the cuttingiron B, which latter is made oi' proper form to slide easily therein. l represents an arm extending from the upper end of the cutting-iron B, as shown, upon which is placed the shoulder bl. v

b2 represents a flat spring fastened to the lower side of the iron, and extepding out in line with shoulder b. By this arrangement a socket is made in which rests the button oi screw C. `The lower or cutting part of the instrument -is made V-shaped, for the purpose of' cutting the groove i'n the staves. If desired, this part may be made square in form, for the purpose oi'V cutting a corresponding groove. i

C represents' a screw, the button of which ts into the socket of the cutter B, as before described, and revolves 4freely therein. y

e c represent its bearings, provided with corresponding screw-threads. .By turning the screw C, the cutter is thrust forward oi" drawn back, as may be desired. if

D represents another screw, placed above the cutter, and operated similarly to C, excepting thatvit is not attached in any way to the cutter. A bearing-surface of different metal may he used if desired, for the cutter to slide upon, hut this is not-essential.

lThis instrument should be attached to the wooden guide, constructed as usual, by means of the lugs a: x.

From this description the operation of my invention will be readily understood.` The iron is easily attached to the screw by simply pushing the former forcibly against b2 and shoulder blgin which case the spring b2 yields sufficiently to permit' the head of the screw C to pn-ssdiy 'the shoulder b1 and rcstin the socket. When itis desired to detach the ironfor any purpose, its Free end shouldl he pulled'up from the croze (the holding-screw having been'loosened) far enough to force spring b2 open, by which means the head of screw C is permitted to slip out. The cutter B is adjusted in or out, aus may be desired, by means of the screw C, after which the screw D is set down upon it, hy which ineansthe cutter is rigidly held in place.

.This construction allows the cutter to be quickly and' easily detached, while at the same time it is firmly held when in use. y

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

The arm b, shoulder b1, and spring b2 of cutting-iron B, when combined and operated in connection with the head of screw C, as and for thepurpose described. w

This speciiication signed and witnessed, this third day of April, 1868.

' CHARLES 0. COOK.

Witnesses:

OLIvnn A. PENNornn, G. W. FORD. 

